The disclosure generally relates to an electronic device, and more particularly, to an inductor device.
The various types of inductors according to the prior art have their advantages and disadvantages. For example, a spiral inductor has a higher Q value and a larger mutual inductance. However, its mutual inductance value and coupling are both occurred between the coils. For an eight-shaped inductor which has two sets of coils, the coupling between the two sets of coils is relatively low. However, an eight-shaped inductor occupies a larger area in a device. In addition, although a traditional stacked eight-shaped inductor has better symmetry, its inductance value per unit area is lower. Therefore, the scopes of application of the above inductors are limited.
The foregoing presents a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the present disclosure or delineate the scope of the present disclosure. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.
One objective of the present disclosure is to provide an inductor device to resolve the problems of the prior art. The means of solution are described as follows.
One aspect of the present disclosure is to provide an inductor device. The inductor device includes a first wire, a second wire, an input terminal, a third wire, a fourth wire, and an eight-shaped inductor structure. The first wire is disposed in a first area. The second wire is disposed in a second area. The input terminal is disposed on a first side of the second area. The third wire is disposed in the first area and at least partially overlapped with the first wire in a vertical direction, and the third wire is coupled to the first wire. The fourth wire is disposed in the second area and at least partially overlapped with the second wire in the vertical direction, and the fourth wire is coupled to the second wire. The eight-shaped inductor structure is disposed on an outer side of the third wire and the fourth wire.
Therefore, based on the technical content of the present disclosure, the inductor device adopting the structure according to the embodiment of the present disclosure has a better inductance value per unit area.
It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the disclosure as claimed.
Reference is made to
To facilitate understanding of the present disclosure, the inductor device 1000 shown in
Reference is made to
Reference is made to
In one embodiment, a first terminal of the first wire 1110 is disposed in the inner wire of the first wire 1110. A first terminal of the third wire 1210 is disposed in the inner wire of the third wire 1210. The first terminal of the first wire 1110 and the first terminal of the third wire 1210 are coupled at a connection point A.
In one embodiment, the third wire 1210 is partially overlapped with the first wire 1110 in a direction which is vertical to the third wire 1210. In other words, in a top-view direction of the inductor device 1000, the third wire 1210 is partially overlapped with the first wire 1110. The first wire 1110 is coupled with the third wire 1210 through a vertical connecting piece (i.e., a via) at the connection point A in the top-view direction of the inductor device 1000. In another embodiment, the third wire 1210 is substantially overlapped with the first wire 1110 in the direction which is vertical to the third wire 1210.
In one embodiment, a second terminal of the first wire 1110 (located in the outer wire of the first wire 1110) and the eight-shaped inductor structure 1200 are coupled at a connection point B. The first wire 1110 is coupled with the eight-shaped inductor structure 1200 through a vertical connecting piece at the connection point B in a top-view direction of the inductor device 1000.
In one embodiment, the fourth wire 1220 is disposed in the second area 1500 and at least partially overlapped with the second wire 1120 in a direction which is vertical to the second wire 1120. That is to say, the fourth wire 1220 is disposed above or below the second wire 1120, and the fourth wire 1220 is coupled to the second wire 1120.
In one embodiment, a first terminal of the second wire 1120 is located in the inner wire of the second wire 1120. A first terminal of the fourth wire 1220 is located in the inner wire of the fourth wire 1220. The first terminal of the second wire 1120 and the first terminal of the fourth wire 1220 are coupled at a connection point C.
In one embodiment, the fourth wire 1220 is partially overlapped with the second wire 1120 in a direction which is vertical to the fourth wire 1220. In other words, the fourth wire 1220 is partially overlapped with the second wire 1120 in a top-view direction of the inductor device 1000. The second wire 1120 and the fourth wire 1220 are coupled through a vertical connecting piece at the connection point C in the top-view direction of the inductor device 1000. In another embodiment, the fourth wire 1220 is substantially overlapped with the second wire 1120 in a direction which is vertical to the fourth wire 1220.
In one embodiment, a second terminal of the second wire 1120 (located in the outer wire of the second wire 1120) and the eight-shaped inductor structure 1200 are coupled at a connection point D. The second wire 1120 and the eight-shaped inductor structure 1200 are coupled through a vertical connecting piece at the connection point D in a top-view direction of the inductor device 1000.
In one embodiment, the first wire 1110 and the second wire 1120 are approximately symmetrical with each other. The third wire 1210 and the fourth wire 1220 are approximately symmetrical with each other. For example, the first wire 1110 and the second wire 1120 are approximately symmetrical with each other based on a symmetry axis SY1. The third wire 1210 and the fourth wire 1220 are approximately symmetrical with each other based on the symmetry axis SY1.
In one embodiment, the eight-shaped inductor structure 1200 includes a crossing portion 1213 which is located on a second side of the first area 1400 (i.e., the left side) and a crossing portion 1223 which is located on a second side of the second area 1500 (i.e., the left side). As shown in
In one embodiment, the inductor device 1000 further includes a connecting piece 1130 (as shown in
In one embodiment, the inductor device 1000 further includes an input terminal 1600, and the input terminal 1600 is disposed on a first side of the second area 1500 (such as a lower side in
Reference is made to
Reference is made to
The signal is transmitted in the upper-half portion of the eight-shaped inductor structure 1200, the crossing portion 1213, and the third wire 1210 in a second direction (i.e., the counterclockwise direction). The signal is transmitted from the third wire 1210 to the first wire 1110 at the connection point A, and is transmitted in the first wire 1110 in the second direction (i.e., the counterclockwise direction). Subsequently, the signal is transmitted from the first wire 1110 through the connection point B to the eight-shaped inductor structure 1200. The signal is transmitted through the crossing portion 1230 to the lower-half portion of the eight-shaped inductor structure 1200, and output to another terminal of the input terminal 1600 (i.e., the right terminal).
To facilitate understanding of the present disclosure, the inductor device 4000 shown in
Reference is made to
Reference is made to
In one embodiment, the eight-shaped inductor structure 4200 includes a crossing portion 4213 located on a fourth side of the first area 1400 (i.e., the right side) and a crossing portion 4223 located on a second side of the second area 1500 (i.e., the left side). The fourth side of the first area 1400 is different from the second side of the second area 1500. As shown in
In one embodiment, the eight-shaped inductor structure 4200 is coupled at a third side of the first area 1400 (i.e., the upside) in an interlaced manner. An extension direction of the third side of the first area 1400 is vertical to an extension direction of the fourth side of the first area 1400 (i.e., the right side). The third wire 4210 has a crossing portion 4240 (as shown in
In one embodiment, the inductor device 4000 further includes a connecting piece 4131 and a connecting piece 4133 (as shown in
In one embodiment, the inductor device 4000 further includes an input terminal 1600 and a center-tapped terminal 1700. The input terminal 1600 and the center-tapped terminal 1700 are disposed on the first side of the second area 1500 (i.e., the lower side in
In one embodiment, the first wire 4110 and the second wire 4120 are located on a same layer, and the third wire 4210 and the fourth wire 4220 are located on a same layer. Because the third wire 4210 is disposed above the first wire 4110 and the fourth wire 4220 is disposed above the second wire 4120, the third wire 4210 is disposed in a different layer from the second wire 4120 and the fourth wire 4220 is disposed in a different layer from the first wire 4110.
In one embodiment, the inductor device 4000 has a bevel symmetry structure. As shown in
It can be understood from the embodiments of the present disclosure that application of the present disclosure has the following advantages. The inductor device adopting the structure of the present disclosure has a symmetrical structure, and the coupling on the left-and-right side of the inductor device and the coupling on the upper-and-lower layers are generated. The inductor device adopting the structure of the present disclosure provides the inductance value of differential mode and minimizes the inductance value of common mode. Therefore, the inductor device of the present disclosure provides a better inductance value per unit area.
Number | Date | Country | Kind |
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108141274 | Nov 2019 | TW | national |
This application claims priority to and the benefit of U.S. Provisional Patent Application No. 62/826,286, filed on Mar. 29, 2019, U.S. Provisional Patent Application No. 62/871,263, filed on Jul. 8, 2019, and Taiwan Application Serial Number 108141274, filed on Nov. 13, 2019, the entire contents of which are incorporated herein by reference as if fully set forth below in its entirety and for all applicable purposes.
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